/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at http://curl.haxx.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 * $Id: strequal.c,v 1.40 2008-10-23 11:49:19 bagder Exp $
 ***************************************************************************/

#include "setup.h"


#include "strequal.h"

int curl_strequal(const char *first, const char *second)
{
#if defined(HAVE_STRCASECMP)
	return !(strcasecmp)(first, second);
#elif defined(HAVE_STRCMPI)
	return !(strcmpi)(first, second);
#elif defined(HAVE_STRICMP)
	return !(stricmp)(first, second);
#else
	while (*first && *second)
	{
		if (toupper(*first) != toupper(*second))
		{
			break;
		}
		first++;
		second++;
	}
	return toupper(*first) == toupper(*second);
#endif
}

int curl_strnequal(const char *first, const char *second, size_t max)
{
#if defined(HAVE_STRNCASECMP)
	return !strncasecmp(first, second, max);
#elif defined(HAVE_STRNCMPI)
	return !strncmpi(first, second, max);
#elif defined(HAVE_STRNICMP)
	return !strnicmp(first, second, max);
#else
	while (*first && *second && max)
	{
		if (toupper(*first) != toupper(*second))
		{
			break;
		}
		max--;
		first++;
		second++;
	}
	if (0 == max)
		return 1; /* they are equal this far */

	return toupper(*first) == toupper(*second);
#endif
}

#ifndef HAVE_STRLCAT
/*
 * The strlcat() function appends the NUL-terminated string src to the end
 * of dst. It will append at most size - strlen(dst) - 1 bytes, NUL-termi-
 * nating the result.
 *
 * The strlcpy() and strlcat() functions return the total length of the
 * string they tried to create.  For strlcpy() that means the length of src.
 * For strlcat() that means the initial length of dst plus the length of
 * src. While this may seem somewhat confusing it was done to make trunca-
 * tion detection simple.
 *
 *
 */
size_t Curl_strlcat(char *dst, const char *src, size_t siz)
{
	char *d = dst;
	const char *s = src;
	size_t n = siz;
	size_t dlen;

	/* Find the end of dst and adjust bytes left but don't go past end */
	while (n-- != 0 && *d != '\0')
		d++;
	dlen = d - dst;
	n = siz - dlen;

	if (n == 0)
		return(dlen + strlen(s));
	while (*s != '\0')
	{
		if (n != 1)
		{
			*d++ = *s;
			n--;
		}
		s++;
	}
	*d = '\0';

	return(dlen + (s - src));     /* count does not include NUL */
}
#endif
